package com.itheima.servlet;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.Method;

public class BaseServlet extends HttpServlet {
    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //1.获取URI
        String requestURI = req.getRequestURI();
        //2.获取执行的方法名
        String methodName = requestURI.substring(requestURI.lastIndexOf("/") + 1);
        //3.获取method对象(反射)
        //3.1方法名
        //3.2参数列表:HttpServletRequest req, HttpServletResponse resp
        //3.3方法所在对象
        try {
            Method method = this.getClass().getDeclaredMethod(methodName, HttpServletRequest.class, HttpServletResponse.class);
            //暴力反射
            method.setAccessible(true);
            //执行方法对象
            method.invoke(this,req,resp);

        } catch (Exception e) {
            e.printStackTrace();
        }


    }

}
